EP2454047B1 - Submerged arc welding system with pressurized flux delivery having at least one vent - Google Patents

Submerged arc welding system with pressurized flux delivery having at least one vent Download PDF

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Publication number
EP2454047B1
EP2454047B1 EP10745391.2A EP10745391A EP2454047B1 EP 2454047 B1 EP2454047 B1 EP 2454047B1 EP 10745391 A EP10745391 A EP 10745391A EP 2454047 B1 EP2454047 B1 EP 2454047B1
Authority
EP
European Patent Office
Prior art keywords
flux
welding torch
submerged arc
robot
arc welding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP10745391.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2454047A2 (en
Inventor
David A. Mate
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lincoln Global Inc
Original Assignee
Lincoln Global Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lincoln Global Inc filed Critical Lincoln Global Inc
Publication of EP2454047A2 publication Critical patent/EP2454047A2/en
Application granted granted Critical
Publication of EP2454047B1 publication Critical patent/EP2454047B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/18—Submerged-arc welding
    • B23K9/186—Submerged-arc welding making use of a consumable electrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/32—Accessories
    • B23K9/324—Devices for supplying or evacuating a shielding or a welding powder, e.g. a magnetic powder

Definitions

  • the present application relates to a submerged arc welding system according to the introductory part of claim (see, for example, US 4 642 752 A ). More particularly, the present application relates to an automatic submerged arc welding system with a pressurized flux delivery system.
  • Submerged arc welding is a type of welding where the arc is completely submerged in a covering of granular fusible flux.
  • the flux protects the molten weld puddle from atmospheric contamination.
  • Submerged arc welding systems may include a welding power supply, a wire feed control and drive assembly and a welding torch.
  • submerged arc welding systems also include a flux system. The flux system holds and delivers the flux to the weld joint during welding.
  • the submerged arc welding system further may comprise a wire motor configured to move wire from the wire supply along the wire path to the welding torch and/or the wire motor may be connected to the first arm of the robot and/or the pressurized flux delivery system may be configured to be located distal from the robot and/or the flux valve may be biased in a closed position and/or the flux valve may include a piston and cylinder.
  • Figure 1 is a perspective view of a submerged arc welding system 100 used with a robot R.
  • the robot R has a base B, a first arm A1, and a second arm A2.
  • the first arm A1 is rotatably connected to the base B and is configured to rotate about a first axis X1 and a second axis X2.
  • the second arm A2 is rotatably connected to the first arm A1 and is configured to rotate about a third axis X3 and a fourth axis X4.
  • the robot R further includes a torch mounting bracket M, connected to the second arm A2, that articulates about a fifth axis X5 and sixth axis X6.
  • the robot R is the ARC MATE 120iBe manufactured by FANUC ROBOTICS.
  • the illustrated robot R is merely exemplary, and that the submerged arc welding system 100 may be employed with any robot or robotic arm.
  • the submerged arc welding system 100 includes a welding torch 105 comprising a power block 110, a welding torch cable 115, and a nozzle 120.
  • the welding torch cable 115 may include an optional liner.
  • the welding torch includes a first power block, a second power block, and a wire conduit and welding cables configured to handle required amperage connected to the second power block.
  • the welding torch 105 weighs less than 20 kilograms.
  • the welding torch 105 is connected to the second arm A2 of the robot R by the torch mounting bracket M. In an alternative embodiment, the welding torch 105 is directly connected to the second arm A2.
  • a wire supply 125 supplies welding wire 130 to a wire motor 135, which feeds the welding wire 130 through the welding torch cable 115 of the welding torch 105 and subsequently through the nozzle 120.
  • the wire motor 135 moves the welding wire 130 from the wire supply 125 along a wire path though the nozzle 120 of the welding torch 105, wherein the wire path includes the wire motor 135 and the welding torch cable 115.
  • the wire supply 125 is shown as a single spool of welding wire, but it should be understood that the wire supply 125 may include two or more wire supplies, such as a first spool of welding wire and a second spool of welding wire. Where two or more wire supplies are employed, a corresponding number of wire motors and welding torch cables are employed. In other alternative embodiments (not shown), the wire supply 125 may take the form of a reel, spool, drum, or box container.
  • the wire supply 125 is not directly mounted to the robot R. Instead, the wire supply 125 is located distal from the robot R.
  • the wire supply 125 may be located any distance from the robot R, such that it may be placed in a position suitable for a particular environment. In most known welding environments, the wire supply 125 will be located between about 1 meter to about 50 meters from the robot R.
  • the wire motor 135 is shown mounted to the first arm A1 of the robot R, behind the third and fourth axes. In alternative embodiments (not shown), the wire motor 135 may be mounted to the second arm A2 of the robot R, or placed in a location not connected to the robot R.
  • the submerged arc welding system 100 includes a flux supply 140 that supplies flux through a flux line 145 to the welding torch 105.
  • the flux includes granular fusible flux particles.
  • the flux particles may include lime, silica, manganese oxide, calcium fluoride, or a combination thereof.
  • the flux may also include flux fines (i.e., small particles) and dust of the same or similar composition as the flux particles.
  • the flux supply 140 includes a vacuum unit (not shown) having a hose extending adjacent the nozzle 120.
  • the hose and vacuum unit are configured to use suction to collect flux particles that pass through the nozzle 120 and remain on a surface.
  • the flux supply 140 includes a pressurized flux delivery system that employs pressurized air to push or otherwise move flux through the flux line 145, wherein the flux line 145 is directly connected to the welding torch 105.
  • the flux supply 140 is shown as a feed tank, such as a pressurized feed tank. There is no intervening gravity hopper disposed between the flux supply 140 and the welding torch 105.
  • the pressurized flux delivery system moves the flux along a flux path from the flux supply 140 to the nozzle 120 of the welding torch 105, wherein the flux path does not include a gravity hopper.
  • the flux supply 140 is not directly mounted to the robot R. Instead, the flux supply 140 is located distal from the robot R.
  • the flux supply 140 may be located any distance from the robot R, such that it may be placed in a position suitable for a particular environment. In most known welding environments, the flux supply 140 will be located between about 1 meter to about 20 meters from the robot R.
  • the submerged arc welding system 100 may also include a flux recycling system (not shown) for recycling flux that is discharged through the nozzle 120.
  • the flux recycling system may include one or more vacuum tubes that lead back to the flux supply 140 or to the flux line 145, thereby allowing discharged flux to be reused.
  • Figure 2 illustrates a side view of one embodiment of the welding torch 105.
  • the welding torch 105 includes a flux muffler 150 disposed along the flux path and connected to the flux line 145.
  • the flux muffler 150 is adjacent to and connected with the welding torch 105.
  • the flux muffler 150 is integral with the welding torch 105.
  • the flux muffler 150 is spaced from the welding torch.
  • FIG. 3 illustrates a partial cross-section of the flux muffler 150.
  • the flux muffler 150 includes a vent chamber 155 inside a casing 160.
  • the vent chamber 155 has at least one vent 165 configured to remove pressurized air from the flux path.
  • the vent chamber 155 is a tubular conduit having an input 170, an output 175, and a plurality of elongated vents 165.
  • the vent chamber may have a square, rectangular, or other geometric cross-section.
  • the input 170 of the vent chamber 155 is smooth and has an outer diameter smaller than the inner diameter of the flux line 145, such that the input 170 may be inserted into the flux line 145.
  • the flux line 145 may have elastic properties to maintain a connection with the vent chamber 155.
  • the flux line 145 may be clamped onto the input 170 of the vent chamber 155.
  • the input 170 of the vent chamber 155 may be threaded, or may have a snap-fit or other configuration to be connected to the flux line 145.
  • the output 175 of the vent chamber 155 is a threaded end, configured to be connected to a lower portion of the flux line 145.
  • the output 175 of the vent chamber 155 may be a smooth end, a snap-fit connector, or other known connector.
  • the vents 165 of the vent chamber 155 may be dimensioned to allow air to pass through without allowing flux particles to pass through.
  • the casing 160 surrounds the vent chamber 155 and is configured to capture any flux fines, dust, or other flux particles that pass through the vents 165 of the vent chamber 155.
  • the casing 160 is open at the top to allow air to escape to the environment and includes a filter F to capture flux fines and dust, preventing them from passing through the open top.
  • Exemplary filters include steel wool, or other fibrous materials that will allow air movement but restricts the flux fines.
  • the filter F is only located in an upper portion of the casing 160.
  • the filter F extends to the bottom of the casing 160.
  • the casing 160 does not include a filter.
  • the casing 160 is closed at the top.
  • the casing 160 is connected to a secondary flux line 180 that forms a path for the escaped flux fines, dust, and other flux particles.
  • This path may be referred to as a flux fines path, a flux return path, or a flux recycling path.
  • the secondary flux line 180 is reconnected to the flux line 145 below the flux muffler 150 and above the nozzle 120. In this manner, the escaped flux fines, dust, and other flux particles are recycled and rejoin the other flux particles. This process may be referred to as recycling, even though it occurs before the flux passes through the nozzle 120.
  • the flux line 145 is connected to the nozzle 120 such that the flux and the recycled flux fines, dust, and other flux particles travel through the flux line 145 and pass through the nozzle 120.
  • the nozzle also includes vent to evacuate remaining air to the environment.
  • a flux valve 185 is located along the flux line 145, and is configured to control the release of flux from the flux path to the nozzle 120 of the welding torch 105.
  • the flux valve 185 is directly below the flux muffler 150 and spaced from the nozzle 120 of the welding torch 105.
  • the flux valve may be adjacent the nozzle 120 of the welding torch 105.
  • the flux valve 185 is a SPARTAN SCIENTIFIC SERIES APV-23 valve. In alternative embodiments, the flux valve 185 is a pinch, gate, or a butterfly style valves. In one embodiment, the flux valve 185 is normally biased in a closed position to prevent flux from accidentally being discharged through the nozzle 120.
  • Figure 4 illustrates a partial cross-section of the flux valve 185.
  • the flux valve 185 is substantially cylindrical and includes a piston 190 configured to extend into and seal a tube 195.
  • the piston 190 is further configured to be retracted from the tube 195, thereby creating an opening along flux to pass through.
  • the flux valve 185 may include a spring extended pneumatic operator to control extension or retraction of the piston 190.
  • FIG. 5 illustrates a side view of an alternative embodiment of a welding torch 200 that is substantially the same as the welding torch 105 except for the differences described herein.
  • the alternative welding torch 200 includes an alternative flux muffler 205.
  • a partial cross-section of the alternative flux muffler 205 is illustrated in Figure 6 .
  • the flux muffler 205 is substantially the same as the flux muffler 150, except for the differences described herein.
  • the alternative flux muffler 205 includes a vent chamber 210 in a casing 215.
  • the casing 215 is not connected to secondary flux line leading towards the nozzle of the welding torch. Instead, the casing 215 is connected to a vacuum tube 220 that leads away from the nozzle and forms a path for the escaped flux fines, dust, and other flux particles.
  • the vacuum tube 220 is connected to the flux supply. In an alternative embodiment, the vacuum tube 220 is connected to the flux line. In both embodiments, escaped flux fines, dust, and other flux particles are reused. This process may be described as recycling, even though it occurs before the escaped flux fines, dust, and other flux particles are discharged through the nozzle.
  • the casing 215 is open at the top and includes an internal filter F to capture flux fines and dust, preventing them from passing through the vents.
  • filters include steel wool, or other fibrous materials that will allow air movement but restricts the flux fines.
  • the filter F is only located in an upper portion of the casing 215.
  • the filter F extends to the bottom of the casing 215.
  • the casing 215 does not include a filter.
  • the casing 215 is closed at the top.
  • Figure 7 illustrates another flux muffler 300 not covered by the present invention.
  • the flux muffler 300 is substantially the same as the flux muffler 150 and the alternative flux muffler 205, except the flux muffler 300 includes a casing 305 having a plurality of vents 310.
  • the flux muffler 300 does not include a secondary flux line or a vacuum tube. Instead pressurized air is simply evacuated through the vents to the environment.
  • a vent chamber 315 inside the casing also has a plurality of vents (not shown).
  • the flux muffler 300 further includes an internal filter disposed between the vent chamber 315 and the casing 305 to capture flux fines and dust, preventing them from passing into the environment.
  • Exemplary filters include steel wool, or other fibrous materials that will allow air movement but restricts the flux fines.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding In General (AREA)
EP10745391.2A 2009-07-16 2010-07-16 Submerged arc welding system with pressurized flux delivery having at least one vent Not-in-force EP2454047B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/504,411 US8552329B2 (en) 2009-07-16 2009-07-16 Submerged arc welding system with pressurized flux delivery and welding torch
PCT/IB2010/001739 WO2011007245A2 (en) 2009-07-16 2010-07-16 Submerged arc welding system with pressurized flux delivery and welding torch

Publications (2)

Publication Number Publication Date
EP2454047A2 EP2454047A2 (en) 2012-05-23
EP2454047B1 true EP2454047B1 (en) 2016-03-30

Family

ID=43034421

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10745391.2A Not-in-force EP2454047B1 (en) 2009-07-16 2010-07-16 Submerged arc welding system with pressurized flux delivery having at least one vent

Country Status (5)

Country Link
US (3) US8552329B2 (ja)
EP (1) EP2454047B1 (ja)
JP (2) JP5480378B2 (ja)
CN (1) CN102548702B (ja)
WO (1) WO2011007245A2 (ja)

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US9085043B2 (en) 2009-07-16 2015-07-21 Lincoln Global, Inc. Submerged arc welding system with pressurized flux delivery and welding torch
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KR102127517B1 (ko) * 2013-07-01 2020-06-29 삼성전자주식회사 도어 및 이를 가지는 의류처리장치
KR102045613B1 (ko) * 2014-05-09 2019-11-15 이에스에이비 아베 복수의 아암 링크 및 조인트를 갖춘 인체공학적 용접 아암
US10046421B2 (en) * 2014-06-11 2018-08-14 Andersen Industries, Inc. Welding apparatus
CN104439653B (zh) * 2014-12-03 2016-08-31 唐山开元特种焊接设备有限公司 双丝埋弧焊机器人焊枪
ITUA20162977A1 (it) 2016-04-28 2017-10-28 Illinois Tool Works Alimentatori di nastro per placcatura aventi supporti di guida regolabili per il nastro e sistemi di placcatura a nastro con alimentatori di nastro per placcatura aventi supporti di guida regolabili per il nastro
ITUA20162981A1 (it) 2016-04-28 2017-10-28 Illinois Tool Works Dispositivi di rilascio di un flusso granulare di saldatura e sistemi di placcatura a nastro con dispositivi di rilascio di un flusso granulare
ITUA20162983A1 (it) 2016-04-28 2017-10-28 Illinois Tool Works Teste per placcatura a nastro aventi regolazioni indipendenti della pressione del nastro e sistemi di placcatura a nastro con teste per placcatura a nastro aventi regolazioni indipendenti della pressione del nastro
ITUA20162979A1 (it) 2016-04-28 2017-10-28 Illinois Tool Works Teste per placcatura a nastro aventi limiti di pressione del nastro e sistemi di placcatura a nastro con teste per placcatura a nastro aventi limiti di pressione del nastro
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CN110238491B (zh) * 2019-07-22 2021-06-08 福尼斯(南京)表面工程技术有限公司 一种CMT埋弧焊焊接inconel的方法
CN114523179B (zh) * 2022-01-25 2023-03-17 重庆凯安机电制造有限公司 一种新能源汽车车门智能焊接机械臂
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Also Published As

Publication number Publication date
CN102548702B (zh) 2016-02-24
CN102548702A (zh) 2012-07-04
US20110011835A1 (en) 2011-01-20
WO2011007245A2 (en) 2011-01-20
EP2454047A2 (en) 2012-05-23
US20140001160A1 (en) 2014-01-02
JP2012532761A (ja) 2012-12-20
US8552330B2 (en) 2013-10-08
US8552329B2 (en) 2013-10-08
US8916792B2 (en) 2014-12-23
JP5480378B2 (ja) 2014-04-23
WO2011007245A3 (en) 2011-05-19
US20120199559A1 (en) 2012-08-09
JP2014111282A (ja) 2014-06-19

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